A company produces very unusual CD's for which the variable cost is $ 10 per CD and the fixed costs are $ 50000. They will sell the CD's for $ 41 each. Let x be the number of CD's produced. 1. Write the total cost C as a function of the number of CD's produced.
2. Write the total revenue R as a function of the number of CD's produced.
3. Write the total profit P as a function of the number of CD's produced.
4. The number of CD's which must be produced to break even is

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earn $75 in interest. how much interest will she earn during the following year?

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed